Profish 440 Evolution IV manufactured prior to the 2013 Hutchwilco Boat Show along with the Evolution III and the Mark II Profish 440's will all accept the Broadband 83/200 kHz transducer - this is the most compact unit. None of these Profish 440's will fit the HDI version transducer (83/200/455/800 kHz) or any of the 50/200 kHz transducers.

Late model Profish 440 Evolution IV kayaks manufactured after the 2013 Hutchwilco Boat show will accept transducers up to the size of the Broadband 50/200 kHz and the HDI 83/200/455/800 kHz, but won't take the massive HDI 50/200/455/800 kHz model.